Insole bottom design



FIG. 1 is a bottom view of an insole showing the new design for use with the left foot;

FIG. 2 is a cross section view of FIG. 1 along line 2—2; and,

FIG. 3 is a bottom view of an insole for the right foot, the other views all being mirror images of those of the left foot.

The portions in broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an insole bottom design, as shown and described. 